Machine Vision and Applications

, Volume 14, Issue 3, pp 172–184 | Cite as

Measuring shape: ellipticity, rectangularity, and triangularity

  • Paul L. Rosin
Original paper


Object classification often operates by making decisions based on the values of several shape properties measured from an image of the object. This paper describes several algorithms (both old and new) for calculating ellipticity, rectangularity, and triangularity shape descriptors. The methods are evaluated by testing on both synthetic and real data.

Key words: Shape - Region - Classification - Moment - Invariant 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Paul L. Rosin
    • 1
  1. 1.Department of Computer Science, Cardiff University, Queen's Buildings, Newport Road, PO Box 916, Cardiff CF24 3XF, UK; e-mail: UK

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